//
//  WDCallBack.m
//  WDPolymerizeSDK
//
//  Created by little People on 2023/6/12.
//

#import "WDCallBack.h"

@implementation WDCallBack
static WDCallBack *_CallBack = nil;
+ (instancetype)shareCallBack
{
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        _CallBack = [[self alloc] init];
        
    });
    return _CallBack;
}
@end
